Dell PowerEdge XE9640 — supported memory

2U direct-liquid-cooled 4-GPU host, two 4th/5th Gen Intel Xeon Scalable CPUs. RDIMM only; usable slots depend on GPU option: Intel GPU configs use only 16 of the 32 DIMM slots (8 per CPU), max 1 TB, supported DIMMs 64/96 GB @5600 and 128 GB @4800; NVIDIA GPU configs allow 8/16/32 DIMM population, max 2 TB, supported DIMMs 16/32/64 GB @4800. Speeds: up to 5600 MT/s (1DPC), 4800 MT/s (1DPC), 4400 MT/s (2DPC); CPU-dependent (5600 requires 5th Gen Xeon).

Confirmed = listed in the vendor's memory documentation for this server. Vendor match = the vendor's own part cross-reference matches the module and its speed is validated for the platform; not taken from this server's memory list. Spec match = meets this platform's JEDEC requirements (generation, form factor, validated speed); interchangeability is spec-based, not per-server testing. How we verify →